send-off game; farewell match
A game or match held to honor and encourage someone before they leave for a major event, such as a tournament or a new position.
The team held a send-off game for him.
At the farewell match, the juniors cheered on their senior.
Compound of 壮行 (sōkō, 'send-off') and 試合 (shiai, 'match, game').